The Golden State Warriors changed things up in a decisive Game 4 win against the Memphis Grizzlies, seizing momentum with critical defensive tweaks that allowed everyone (no, seriously, almost everyone) who predicted the Dubs would advance to breathe a little easier.
Memphis' survival now depends on its ability to counter Golden State's suffocating defense with adjustments of its own.
And that's the issue.
In fact, that was the issue long before the Warriors' Game 4 win.
Ethan Strauss of ESPN.com laid it out after the Dubs trounced a Mike Conley-less version of Memphis in Game 1:
This is a series between a flexible team and one that cannot shape itself to the situation.